Behoves
Must
Must verb - To be under necessity or obligation to.
Cite this Source
Must and Behoves. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/behoves/must
Behoves & Must. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/behoves/must>.
Must or Behoves. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/behoves/must.
Google Ngram Viewer shows how "behoves" and "must" have occurred on timeline